Updated: Four centres did not give a single vaccine shot Share Article AAA Senior citizens and those aged above 45 with co-morbidities turned up in large numbers at various centres for the vaccine. But many had to return disappointed owing to glitches in the CoWIN portal. | Photo Credit: SUDHAKARA JAIN Four centres did not give a single vaccine shot Glitches in CoWIN portal and confusion marred the vaccination drive for senior citizens and patients with co-morbidities on Monday. Of the 22 vaccination centres in the city, multiple centres – Victoria Hospital, C.V. Raman Nagar General Hospital and Columbia Asia Hospital in Whitefield and Sarjapura – did not give a single shot due to glitches in the CoWIN portal and app. In most of these centres, the CoWIN portal couldn’t be accessed, and in some cases, registrations and scheduled appointments did not reflect on the portal.